Tech jobs

Backend Developer (ASO / APX / LRBA)

Backend developer at SlashMobility, a boutique tech consultancy, building backend components and new functionality for clients' digital transformation projects. Core stack is Java/J2EE and Spring, with hands-on work in ASO, APX and LRA Batch within Agile teams.

Agile J2EE Java Spring

Berger-Levrault

Full Stack Developer

API CI/CD Claude Code FastAPI Python +2 skills

Full Stack Developer in Madrid (hybrid) building and maintaining an international software product: designing, developing and testing Python/FastAPI backend services and APIs, plus React frontends, with code reviews, incident investigation and heavy use of AI coding tools in an agile, multicultural team.

Seprotec

Full Stack Developer

API API Gateway AWS EC2 Lambda +3 skills

Full Stack Developer at Seprotec (Madrid) who designs, builds and maintains integrations between the company's platform (XTRF) and client systems via APIs. Day to day: writing Python middleware on AWS (Lambda, EC2, S3, API Gateway), running integration and functional tests, deploying, and documenting solutions.

Thewhiteam

Senior Backend Developer - Spring Boot | Teletrabajo

API AWS Cloud Hibernate Java +5 skills

Thewhiteam is hiring a backend developer to build Java/Spring Boot microservices and secure, scalable REST APIs in cloud environments, working with PostgreSQL, JPA/Hibernate, OAuth2, JWT, and AWS. Requires 4+ years of experience; the position offers remote work and is based in Barcelona, Spain.

CAS Training

Senior Backend Developer Java / Spring Boot/webflux

API CI/CD Docker Java JUnit +3 skills

Senior backend developer working on a long-term project in Spain, building and consuming REST APIs with Java and Spring Boot (with at least 1 year of Spring WebFlux), writing unit and integration tests with JUnit and Mockito, and working with CI/CD, Docker, and Kubernetes.

KAIROS DIGITAL SOLUTIONS

Python Developer

Kairós Digital Solutions, a Spanish digital-transformation consultancy, is hiring a Python Developer in Madrid to lead development of efficient business logic and design scalable microservices architectures, collaborating with frontend teams (Angular experience valued). Hybrid setup: visits to the client's office once every two weeks.

Angular Python

KAIROS DIGITAL SOLUTIONS

Python Developer - Microservices & Angular Hybrid Work

Python developer in Madrid building high-impact solutions on a microservices architecture, working closely with frontend (Angular) teams in a hybrid work setup with a focus on professional growth.

Angular Python

Genda Job

Desarrollador/a Backend en Soluciones Solares (Remoto)

Backend developer for a central platform that manages the performance and operation of large-scale solar installations. The role is 100% remote, working with an international team of engineers and data scientists to build and maintain robust, scalable software for the growing solar energy sector.

Axpe Consulting Sl

Desarrollador Python Backend y agentes de IA

API Django FastAPI Python

Axpe Consulting is hiring a Python backend developer to build microservices and scalable REST APIs (FastAPI/Django) and to develop and integrate AI agents. The role is 100% remote in Spain, working in a 4-person squad on a stable project for a financial entity.

Infortec Consultores

Desarrollador/a Backend Java Senior - 100% Remoto

API AWS Hibernate Java JPA +4 skills

Infortec Consultores is hiring a senior Java backend developer for a 100% remote project built on a microservices architecture. Day to day the person designs technical solutions, works autonomously on complex features and supports the team, using Java, Spring Boot, JPA/Hibernate, PostgreSQL, REST APIs, OAuth2/JWT and AWS.

Infinity Neural

Desarrollador/a Backend Senior · Microservicios y arquitectura

Claude Code C# Docker Java Linux +3 skills

Senior backend developer at Infinity Neural (Badalona, Spain) designing and evolving microservice architecture for an AI video-analysis product deployed in airports, railways, metro and security. Backend is mainly Go with some C#, but strong architectural judgment, PostgreSQL and production experience matter more than a specific language.

Arktic

Backend Java Developer

API Git Go gRPC Hibernate +9 skills

Backend Java Developer at Arktic, a Spanish business/tech consulting firm. Day to day you build Java backend services and microservices (Spring, REST/SOAP APIs, SQL) in a hybrid Madrid setup, using CI/CD tooling and AI-assisted Spec-Driven Development.

Capitole

Java Backend Engineer - Spring Microservices

API Docker Git Java Jenkins +4 skills

Capitole is hiring a Java backend engineer in Barcelona with 3 years of experience to build backend services, design Spring Boot microservices, and create REST APIs using SQL/NoSQL databases in an agile team.

W Hunt España

Remote Java Backend Engineer - Spring Boot, Spark & Azure

API Azure Big Data Cloud Hadoop +4 skills

Backend Java engineer developing Spring Boot–based REST services and participating in Big Data projects using Apache Spark and Hadoop on Azure cloud infrastructure, with integration and deployment handled via Jenkins.

METRICA

Desarrollador Backend Node.js Senior — Remoto, CI/CD

API CI/CD Cloud DevOps Express.js +3 skills

Designs and maintains robust backend APIs using Node.js and Express (3+ years required) at Métrica, an IT business consulting and systems integration firm. Values automated testing, databases, DevOps/CI-CD, Git and GCP experience; full-time telework based in Madrid.

Metrica

Desarrollador Backend Python/Django Remoto

API DevOps Django NoSQL Python +2 skills

Metrica is hiring a backend developer to design and maintain scalable RESTful APIs with Python and Django in a distributed environment, working alongside frontend, product, and DevOps teams. The role is 100% remote, with database (SQL/NoSQL) and cloud platform experience valued.

Nunegal

Desarrollador Backend Java — Remoto

API Java MongoDB MySQL PostgreSQL +2 skills

Nunegal is hiring a fully remote Java Backend Developer to design, develop, and implement scalable, high-performance backend services for its main applications. Day-to-day work centers on Java, Spring Boot, and RESTful APIs, with performance and database optimization across PostgreSQL, MySQL, and MongoDB.

XKTalent Inc. - Rimutee

Desarrollador Backend Senior Java Remoto

Senior Java backend developer for an international project: design medium-complexity end-to-end solutions using Java/JEE and Spring Boot, working 100% remotely in agile, multidisciplinary teams. Competitive salary paid in USD.

Java Spring

BCNC Group

Desarrollador Backend Java Senior (Microservicios)